Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (20): 2035-2039. Previous Articles     Next Articles


杨家振, 金一, 潘伟   

  1. 辽宁大学化学系, 沈阳, 110036
  • 收稿日期:2003-08-10 修回日期:2004-05-26 出版日期:2004-10-28 发布日期:2014-02-17
  • 通讯作者: 杨家振,
  • 基金资助:

Study on Electrochemistry of FeCl3 in Room Temperature Ionic Liquid: BPBF4

YANG Jia-Zhen, JIN Yi, PAN Wei   

  1. Department of Chemistry, Liaoning University, Shenyang 110036
  • Received:2003-08-10 Revised:2004-05-26 Online:2004-10-28 Published:2014-02-17

The cyclic voltammograms for various molarities: C=0.03833, 0.07170 and 0.08954 mol/dm3 of FeCl3 in the room temperature ionic liquid——BPBF4 at GC working electrode referred to Al/Al3+ by different scan rates were measured over temperature range 293.15~343.15 K. Analysis of the voltammograms indicates that the Fe3+ reduction reaction is a reversible process with one transfer electron. According to Randles-Sevcik's equation, values of diffusion coefficient of Fe3+ for various concentrations at different temperatures were estimated. And in terms of Arrenius' equation, values of its diffusion activation energy for various concentrations of Fe3+ were obtained. As temperature increases, values of the diffusion coefficient also increase owing to the diminution of the BPBF4 viscosity. However, as the FeCl3 molarity increases, values of the diffusion coefficient diminish and the diffusion activation energy increases because of the solute-solvent interaction of FeCl3 in BPBF4.

Key words: room temperature ionic liquid, voltammogram, diffusion coefficient, diffusion activation energy, BPBF4